The turbulence cascade in the near wake of a square prism

FA Portela, G Papadakis, JC Vassilicos - Journal of Fluid Mechanics, 2017 - cambridge.org
We present a study of the turbulence cascade on the centreline of an inhomogeneous and
anisotropic near-field turbulent wake generated by a square prism at a Reynolds number of …

Vortex shedding effects in grid-generated turbulence

G Melina, PJK Bruce, JC Vassilicos - Physical Review Fluids, 2016 - APS
The flow on the centerline of grid-generated turbulence is characterized via hot-wire
anemometry for three grids with different geometry: a regular grid (RG60), a fractal grid …

Measurement of turbulent spatial structure and kinetic energy spectrum by exact temporal-to-spatial mapping

P Buchhave, CM Velte - Physics of Fluids, 2017 - pubs.aip.org
We present a method for converting a time record of turbulent velocity measured at a point in
a flow to a spatial velocity record consisting of consecutive convection elements. The spatial …

Genesis and evolution of velocity gradients in near-field spatially developing turbulence

I Paul, G Papadakis, JC Vassilicos - Journal of Fluid Mechanics, 2017 - cambridge.org
This paper investigates the dynamics of velocity gradients for a spatially developing flow
generated by a single square element of a fractal square grid at low inlet Reynolds number …

Energy transfer in turbulent flows behind two side-by-side square cylinders

Y Zhou, K Nagata, Y Sakai, T Watanabe… - Journal of Fluid …, 2020 - cambridge.org
Our previous study (J. Fluid Mech., vol. 874, 2019, pp. 677–698) confirmed that two different
types of, where the dual-wake flow is fully turbulent and becomes much more homogeneous …

Effects of grid geometry on non-equilibrium dissipation in grid turbulence

K Nagata, T Saiki, Y Sakai, Y Ito, K Iwano - Physics of Fluids, 2017 - pubs.aip.org
A total of 11 grids in four families, including single-and multi-scale grids, are tested to
investigate the development and decay characteristics of grid-generated turbulence. Special …

Realisation of Fractal Grid-Induced Turbulence Strength with PTFV: Effects of Grid Geometry

TS Lee, EH Ooi, WS Chang, JJ Foo - Flow, Turbulence and Combustion, 2023 - Springer
The unravelling of multilength-scale insert-generated turbulence, particularly, the induced-
forcing plays critical role in the fundamental comprehension of energy formation and decay …

Effect of blade modifications on the torque and flow field of radial impellers in stirred tanks

K Steiros, PJK Bruce, ORH Buxton, JC Vassilicos - Physical Review Fluids, 2017 - APS
We perform both high-and low-speed particle image velocimetry and torque measurements
to characterize eight radial impeller types in an unbaffled stirred tank. The blade types …

Turbulence characterization of instantaneous airflow above passengers with different air distribution systems in a commercial airliner cabin

M Liu, J Li, J Liu, MA Hassan - Physics of Fluids, 2023 - pubs.aip.org
The environment inside airliner cabins has attracted increasing attention. Instantaneous
airflow, as one of the fundamental parameters of airflow field, affects aspects of the airliner …

Extreme events and non-Kolmogorov spectra in turbulent flows behind two side-by-side square cylinders

Y Zhou, K Nagata, Y Sakai, T Watanabe - Journal of Fluid Mechanics, 2019 - cambridge.org
Extreme events and non-Kolmogorov −5/3 spectra in turbulent flows behind two side-by-side
square cylinders Page 1 J. Fluid Mech. (2019), vol. 874, pp. 677–698. c Cambridge University …